Plaster-board lath



June 24, 1924.' A

' l J. SQHUMACHER PLASTER BOARD LATH Filed Aug. s. 1923 Fig. 1

:Imm Hum l' l ll l l g l l g H T i l a l l l i 2 `6 j l 1 l v l x "55.5: I ||1=== v 1 f6 I en I l vggaqf1 g -l 7//T wmT l come scn-umacnnafor tosnnennns, centro ;4

rnesrmnoann `application mea August 6,' i923. serial m. 656,012.

yBeit known-that I, J oHN iScmmonnn, a citizen ofthe United States, and. resident of Los Angeles, in the county and. State offCaIiOrna, l have invented' new and useful Improvements in PlasterfBoard Lath, of

ticle of manufacture, thereof is vto p This invention relates to van improved arand the primary object rovide a` plaster board lath for use Ainconjunction vvlth4 a cementitious wall' coat,la`nd which 'is arranged to lock or- .key the e-otjjn. place; Another' object of this -invent-ion isftheprovisionpf a lath4 of .the character abfvedescribed whiclris simple n structure, inexpensive' to. produce, durable,

and strotained by means of the embodiment .vention .and-Fig.2 is a sectionas seen on the 1 desired manner.

4'llheseijects' together -'with 'other objects 'and-corresponding accomplishments are obinvention' 'illustrated in drawing,inwhic h: .v v Fig. 1 is a' face viewof a fra ent of-a sheetjor'slab of plaster -boar structed in accordance lwith the present inthe accompanying line2'-2`"of Fig. 1.V

Referring more particularlyto the drawing,the improved. plaster board lath is produced in accordance with any preferredmethod or process, and is Iformed in the' usual -manner of a body or filler 3 disposed between 4 face 'sheets 4 and 5 of 'aper or' 'likefma-- terial. .The body or ler is` preferably.'

formed of cementitious material', and the'face' sheetsv 'are preferably formed of a 'paper slowly permeableto moisture. 'Howeven the with suitable irregularities for the recep-` of said coverlng sheets belng sllt article .is in no way limited to this pp ecise Structure. Suchplasterboard' is well own `in the art, and thez'present invention appertains particularlyto amodicationor alteration of the surface. of theboard. It is lwell' known that in order to perform the function of 4holding the -laster coating to thel board or lath, the sur ace of the latter adapted'to receive the plaster coat'must be provided tion of the latter..

In order to provide 4such irregularities, I

- have provided pockets by cutting tongues of Los-Angeles the tongues, as indicatedby 8 in Fig. 2. An

whichthe following isa specifica-` t1on;.'

of vmy '..Coatng lath con- Y bottoms ofA pockets.

and depressingthe bodyller so as to form,v

recesses. -In formingthe' recesses, undercut Walls 7 are preferably formed at the tips of advantageousway to produce the pockets is to cut the tongues before the plastlc -filler is -introduced betweenthe face sheets, vand then :to depress `the tongues while the filler is in a plastic condition..4

The finished plaster board lath -is applied tothe Walls ofthe building structure preparatory to receiving the plastic or cementi.

tious wallv coating. .This coating may be applied to the lath in any suitable manner, the face thereof :which isprovided with the indentations is disposed to 'receive the plas-l ter. suitable manner an bile state, filling the latter and will'eventually'harden and set within such recesses so as to lockthe coating to the lath. This causes the plaster to be effectively supported and re- Plaster is apiliedto the lathin any -being in a plastic or motained.'

it'will intrude i-ntol the. recesses,

- It is lobvious that the groupin of the pockets or indentations maybe ma e in any Thus, those `shown in the drawing consists of rows, the pockets inone row .being staggered with' relation to the pockets in the adjacentrows.

AWhat I claim is: t. Y

' l. A plaster board having a plurality of pockets therein adapted to'receive -intruding `portions of a plaster coat in interlocking en.- gagement therewith; said boardhaving a cementitious body and covering sheets, one

of said covering sheets bein slit .to form pocket openings `and the portion :dened by the margin of saidopenings beingdepress'ed to form pocketshavin an undercut Wall the covering sheet being' lndented to form the bottoms of said pockets..

2. A 'plaster board having a plurality of pockets therein adapted to receive intrud-v ing portions'of a plaster coat in interlocking engagement-therewith; said boardhaving a sheets, one to rovide form the mclined cementitious body and covering tongues and indented to 3. A plaster board meedere having a plurality. vof

pockets therein adapted to receive intruding portions of a plaster coat in interlocking engagement therewith; said board having e 5 cementitious body and covering sheets, one of said covering sheets being slit to provide `tongues and indented to form the inclined v bottoms of 'pockets having undercut exposed Walls'oppos'ite the tongue tips. Y v

'In Witness'thatii daim the foregoing 5L l@ have hereunto subscribed 'my .neme this 28th day mi July, 1923. l v

donn eonmmonnn.- 

